Nozzle for oxyacetylene and similar torches



B. HEYIVIAN.

NOZZLE FOR OXYACETYLENE AND SIMILAR TORCHES.

APPLICATION FILED Nov. 19, I9I9.

BENJAMIN HEYIVIAN, 0F NEWARK, NEW JERSEY, ASSIGNOR TO OXWELD ACETYLENE COMPANY, OF

NEWARK, NEW JERSEY, A CORPORATION 03F WEST VIRGINIA.

l N OZZLE FOR OXYACETYLENE AND SIMILAR TORGHES,

Specification of Letters Patent..

Patented Nov. 22, MWI.

Application filed November 19, 1919. Serial No. 339,158.

To all whom t may concern.'

Be it known that I, BENJAMIN HEYMAN, a citizen of the United States of America, residing at Newark, in the county ofAEssex and State of New Jersey, have invented cert-ain new and useful Improvements in N oz zles for Oxyacetylene and Similar Torches, of which the following is a full, clear, and exact description.

rlhis invention relates to torches for welding and cutting metals, and pertains more particularly to the nozzle or burner tip from which the flame or flames are projected. The chief object of the invention, briefly stated, is to provide -a nozzle having a gas-tight joint with the head of the torch and which can be easily removed and replaced buty which, when removed, will be practically incapable to injury at the point where it lits the head. Preferably the nozzle is not itself threaded to the head but is secured by means of a threaded collar or union which screws on the head. In the preferred embodiment the meeting faces of the nozzle and head are machined, preferably flat, that is, on a plane perpendicular to the axis of the nozzle, and the latter is provided with a circumferential rib or flange for cooperation with the union. At the center of the meeting face of the nozzle is an axial projection, preferably cylindrical in form, and the edge of said face is provided with a slight bevel, so that if the nozzle happens to fall it cannot strike upon the aforesaid meeting face and be nicked or otherwise injured to the impairment of the desired gas-tight fit with the head.

Referring to the accompanying drawing,

Figure 1 is a section of the head andl nozzle of a cutting torch in which the present invention is embodied in its preferred form.

Fig. 2 is a side view of the nozzle, det-ached from the head.

IF ig. 3 is a sectional View showing the preferred mode of applying the invention to a nozzle the rear end of which is conical to lit a conical seat in the head.

Referring to Figs, 1 and 2, the head 10 has a central bore 11 communicating with a threaded socket 12 for connection with an oxygen supply pipe, and is provided with passage 13 for conveying the combustible mixture (usually oxygen and acetylene) to the annular distributing passage 14, formed by a groove out in the outer face of the head.

The passage 13 communicates with a bore 15, which terminates in a threaded nipple 16 for connection with a pipe for supplying the mixture.

The nozzle 17 is made in one piece and has a. central passage 18 to register with the oxygen passage l1 of the head, and one or more passages @communicating with the annular distributing passage 14. At its rear end the nozzle has a circumferential flange 2() to cooperate with the union or collar 21 which screws on the head to hold 'the nozzle removably in position. The meeting faces of the nozzle and head are machined flat to make a gas-tight joint thereat.

At the center of its rear face the nozzle is provided with a rearward extension or stud 22, preferably cylindrical or conical in form,

and to accommodate the stud when the parts corresponding recess 23.

At the edge of the rear face of the nozzle is a bevel, the inclination of which depends upon the height of the stud 22, or vice versa; the height of the stud and the inclination of the bevel being such that the conical surface thereof, if extended to an apex, would intersect the stud, as indicated by the broken lines a, a, in F ig. 2. Or, stated otherwise, the angle b is such that the natural tangent of the arc c-z/Z, drawn from f as a center with radius f-d, is less than t e height cZ-g of the stud 22. i

If now the nozzle is dropped and strikes on its rear end the blow will be received on the extreme edge It or on the end of the stud, or both, and not on the edge z' or the dat meeting face. The face and its edge are thus protected from dents and nicks. Burrs resulting from such damage to the stud or to the edge it, if sufficient to interfere with assembly of the parts, can be removed with a file without impairing the gas-tight lit of the two faces; but any attempt to file od' a burr raised on the meeting face of the nozzle is almost certain to injure the joint and permit leakage of gas thereat. In exceptional cases the edge z' may receive a slight blow but with this edge sufliciently far from the position of the annular passage 14C, F ig. 1, light filing7 in the direction of.) flattening the bevel, will ordinarily do no harm. 'A

chip or nick such as would be broken out of receive would ordinarily be harmless, but even a small flake or chip knocked out of the fiat face is apt to produce a leak.

In a torch in which the rear end of the nozzle is conical, as in Fig. 3, and makes a gas-tight fit with a conical seat in the head, the conical surface of the nozzle is protected by a stud 24 at the end and a flange 25 at the edge of the conical face, the flange serving also to coperate with the collar 26 by which the nozzle is held in place.

It is to be understood that the invention is not limited to the specific constructions herein illustrated and described but can be embodied in other forms without departure from its spirit.

I claim:

l. A nozzle for an oxyacetylene or similar torch, having at its rear a machined surface to make a gas-tight lit with a corresponding surface in the head of the torch, and having also a central stud or projection at its rear and having at the outer edge of said machined surface means serving with the stud or projection to prevent the machined surface from receiving a blow when the nozzle is dropped.

2. A nozzle for an oxyacetylene or similar torch, having at its rear a machined surface to make a gas-tight lit with a corresponding surface in the hcaed of the torch, and having also a central stud or projection at its rear and having at the outer edge of said machined surface la beveled flange serving with the stud or projection to prevent the machined surface from receiving a blow when the nozzle is dropped.

3. A nozzle for an oxyacetylene or similar torch, having at its rear a machined surface to make a gas-tight lit with a corresponding surface in the head of the torch, and having also at its rear a central stud or projection and having at the outer edge of the machined surface a relatively flat bevel serving with the stud to prevent the machined surface from receiving a blow when the nozzle is dropped.

4. A nozzle for an oxyacetylene or similar torch, having at its rear a flat machined surface to make a gas-tight lit with a corresponding surface in the head of the torch and having a central stud or projection extending from said flat surface, the latter surface having at its outer edge a relatively lfiat bevel, for the purpose described.

5. A nozzle for an oxyacetylene or similar torch, having at its rear a machined surface to make a gas-tight it with a corresponding surface in the head of the torch, and having also a central stud or projection extending from said machined surface and having below said machined surface a circumferential flange joined to the said machined surface by a relatively7 flat conical Surface, for the purpose described.

In testimony whereof I hereunto aHiX my signature.

BENJAMIN HEYMAN. 

